IAT Changing a/f ratio
09-23-2002, 11:26 AM
#1
IAT Changing a/f ratio Prepping the car for the giggle gas.
I will be running a timing tricker to alter my WOT timing 6 deg down when on the juice.
To do this I have connected a circuit to my IAT, and made some changes to my IAT table so that at the flick of a switch, I get a false inlet air reading, and the timing gets retarded.
My question to you folks is: Is this going to change my fueling at WOT at all?
I have done some tests on my own, but never saw any changes to the O2 readings. Does anybody have any conclusive proof how fueling is affected when we mess with the IAT.
Thanks
I will be running a timing tricker to alter my WOT timing 6 deg down when on the juice.
To do this I have connected a circuit to my IAT, and made some changes to my IAT table so that at the flick of a switch, I get a false inlet air reading, and the timing gets retarded.
My question to you folks is: Is this going to change my fueling at WOT at all?
I have done some tests on my own, but never saw any changes to the O2 readings. Does anybody have any conclusive proof how fueling is affected when we mess with the IAT.
Thanks
09-23-2002, 02:52 PM
#2
Re: IAT Changing a/f ratio In edit there appears to be only 1 table related to IAT, for timing, there is IAT vs. MAP. The other tables, Fuel Air Multiplier and PE v. Temp appear to be coolant temp driven, but I can not say that conclusively.
Neat trick. Are you running wet? I assume dry would almost instantly drop the IAT so that you could just change the table, although a window switch arrangement like yours guarantees the result. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Neat trick. Are you running wet? I assume dry would almost instantly drop the IAT so that you could just change the table, although a window switch arrangement like yours guarantees the result. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
09-23-2002, 03:37 PM
#3
Re: IAT Changing a/f ratio I have larger injectors, so I decided to run 100 shot dry. I already have traction problems in 2nd, so anything bigger I think would just be an exercise in tire abuse.
The setup should be pretty trick. I will be running 6 separate switches for all kinds of goodies including automatic N2 injection, or manual injection (for those quick highway bursts), remote bottle opener, purge system, electronic cutout, heater....yadda yadda. I will also be connecting a light board down by my TCS switch to give a pretty cool step-by-step indication of the nitrous hitting (it will light up like the drag tree with the double green being when the n2 hits) <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> .
<img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Hopefully the rear holds <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
The setup should be pretty trick. I will be running 6 separate switches for all kinds of goodies including automatic N2 injection, or manual injection (for those quick highway bursts), remote bottle opener, purge system, electronic cutout, heater....yadda yadda. I will also be connecting a light board down by my TCS switch to give a pretty cool step-by-step indication of the nitrous hitting (it will light up like the drag tree with the double green being when the n2 hits) <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> .
<img border="0" alt="[Fluffy]" title="" src="graemlins/fluffy.gif" />
Hopefully the rear holds <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />